def PrimeMover(num)

def is_prime(x)
  i = 0
  nums = (2..x).to_a
  while nums[i] < nums.max
    if x % nums[i] != 0
      i += 1
    else
      return false
    end
  end
  return true
end

primes_arr = (3..104729).to_a.select {|y| is_prime(y)}

primes_arr[num]